Combination-lock.



J. BAUM. DECD. A. w. BAUM. II. BIRNBRYER, G. III. AcnII a. I. I3. oEIIEs,ExEcuToas COMBINATION LOCK.

APPLICATION FILED IuLY 16. I9I5.

3l @4Q l @I l Patented Sept. l1', MHT/ In J p Wagga j entran etarras radianti onirica.

JACOB BAUM, OF CINCINNATI, OHIO; ANNA WILLIAMS BAUM, MARY BAUM BIRN- BR'YER, GEO. M. BACON, AND JOSEPH B. DERBES, EXEGUTORS OF SAID JACOB BAUM, DEGEASED.

COMBINATION-LOCK.

remita.

Application filed July 16, 1915.

To all 'whomz't may concern:

' Be it known that I, JACOB BAUM, a citizen of the'United States, and a resident of Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements lin Combination-Locks, of 'which the following is a specification.

My invention relates to locks; and its object is to facilitate and render more secure the fastening of the inner disks in the tumbler wheels, and to simplify the construction ofthe` inner disks and otherparts of the lock. Y My invention consists in the combination of parts and in the details of construction and arrangement of parts as will herein be more fully described and claimed.

In the drawing:

Figure 1 isa vertical section through the tumbler wheels and their mounting;

Fig. 2 is a similar view of ,one of the tumbler wheels of modified construction;

Fig. 3 is a detail of the fastening ring;

Fig. 4 is a front elevation, and Fig. 5 is a rearV elevation of one of the tumbler wheels.

The back plate 1, has, projecting forwardly into the lock, the hollow stud 2 upon which stud the tumbler wheels 3 are rotatably mounted `with washers 4 interposed between them, and with a washer 5 interposed between them and the back 'plate 1. The washers 4 have lugs 6 projecting into a longitudinal keyway 7 on the exterior of the hollow stud 2. Near its forward end, the hollow stud 2 has an annular groove 8,

- into which `is sprung a ring 9 that prevents the Vtumbler from `forward displacement from the hollow stud 2.

The back plate 1 is made up of a forward section 1 and a rear section 1 with the hollow stud 2 pressedV forward from the section 1, these sections being made of sheet metal, and the structure thusbeing in two pieces joined together instead of an integral cast structure as commonly used.

The front section ljof the back plate is formed up with its peripheral part consisting of a flat radially extending flange 1"L and an outer or peripheral shell 1b, which joins the hollow stud 2 through an intermediate part 1cr that is pressed backward in the form of an annular channel of substantially semicircular. cross section, whichis of diameter somewhat less than the distance betweenthe Specification of Letters Patent.

Patented Sept. 11, 191W.

Sera1 No. 40,240.

shell 1b and hollow stud 2, so that annular plane parts 1d and 1e are left around the center and near the periphery, respectively, to form the front surfaces of the back plate. The part 1d forms bearing for the washers 5. The outer shell lb forms the bearing for the back plate in the aperture inside of the safe door or lock case into which such locks are itted in a well-known manner, and the iiange la serves to attach the forward section l to the rear section 1, which latter section is merely a disk of sheet metal with its edge l turned forward over the flange 1a and pressed tightly down thereon. Thus the back plate is formed with a radially extending peripheral flange made up of three thicknesses of the sheet metal, and thus of ample thickness to afford the rcquired strength for securing the back plate to the safe door by a fastening means passing through openings 1n in this flange. The hollow stud 2 may haveits keyway 7 and the annular groove 8 pressed in it.

Each tumbler wheel 3 comprises the main outer disk 10 and the inner disk 11 fitting into a central aperture of the main outer disk, the wall of the aperture and the periphery of the inner disk having teeth 12 that mesh and cause the two disks to turn together, but allowing the inner disk to be slipped out and reinserted in as many different positions relative to the outer disk 10 as there are teeth 12. As is well known, it is by this means that the combination of the lock is changed. I simplify the opera tion of changing the combination of the lock, and at the same `time render secure the fastening of the inner disk in the outer disk, by providing` a fastener 13 made of a piece of resilient wire bent into an incomplete circle and sprung into an annular groove 14 formed in a reduced part 15 of the periphery of the inner disk 11 directly to the rear of the teeth 12, exteriorly of the main outer disk 10. The reduced part 15 is of such diameter relative to the diameter of the outer circle of the teeth 12, and the groove 14 is of such depth, that the ring 13 will project out all around and engage with the main outer disk 10 of the tumbler wheel around the rear sides of the teeth of the tumbler wheel andbe easily pried from its groove when desired. Thus the ring may be very strong and unyielding to side thrust of the disks 10 and 11 relative to each other. ,i

lVith the groove 14 thusV provided,A the "proper relation with "the rear side ofthe oliterinain disk 10 around the"cen'itral"api-ii`- tdre 'for the resilient vfastener 13 Lto`engnge tightly against said rear part when spr'u'ng hito 1the groove 14.

As sho'ivn in FignQ, the toothed parts are nttaper'ed, but the toothed vvall ofthe cent'rztl apertur'eof the outer"disklOa is 'Lp'rovided w'lvith a shoulder 1G against'vvhichthe rearior'inner sides ofthe teeth O'nthe periphery of tht internist '1'1ZL abut and 'fp'r'mtli'e stop therefor, co'perating ivith "the 'fastener =`'13 and groov'el 'as abovefdescribe'd.

JAsis Wellknoivn incoinbination lock construction, one tumbler iWheel"drives the other iie by means 'of a'statinary 'lug 'engaging ivitha novablellugn the otherone. Thus, the inner disk |11 of each drivingtuinbler Wheel has a stud 17 which engages with "a movable lug 18 on each driven :tumbler ivheel, which Amovable lug 4xis mountedr'n'a ring 19 journaled on a -central Ihub. 20 formed by/tuining an'annulargroove 21 in the front df'the disk 11 f'rzthe ring 19 to lie in. This movable lug 18 projects back throughla segmental slbt 22 inlthedisk 171, being limited in its 'mveinen'tfbytheends bfthisslt, asis Wellr'knovvn in the art.

As heretofore constructed, the studs inserted iinto the inner disks '1I1`to `for1 n"th'e stationary lugs,in'u`st be very carefully fitted after their insertion to accurately cooperate ywith the movable lugs, 'and furthermore have the 'disadvantage of'be'coinin'g loosened after considerable use.

I r"obi'fiate Ithesl'eI disadvantages by forming .tlieinner disk of Wrought Inetiihhsindeed,

l"en

I also -form the outer mainp'art 10"of, lby vcuttingthese pai-ts from sheet metal yand pressing thereon not only "thc teeth, either t'rtp'ered or shouldered,"as sh'oiv'n "in Fig I1 r'FigJQ, butfalso pressing in theinner disk thegroove 21, 'cuttingthrein the? seginei'ital slotl22, andpressing up from a slot diametrically opposite *from fthe slt 22 therein, i an 'integral lug 17. When the gluglis thus pressed "up, :it is *preferably made `Wide,l as best s'h'oivn in Fig, togive ittherequi'site strength in circumferential direction, rand 'this increase in ividthis'freadily compensated ffer-tyitttetttng ttty ittigthfot-tht, 'segmental .because lthey can allfbewshaped very accurately and uniformly, and are more readily interchangeable .than when fitted by Inachinery. Where hand fitting is dispensed with, the parts are made interchangeable, Y

"Whereas befre they Were not at all interchangeable. v Y l y Having fully 'described Iny V`inrfentilon, what 'Iclaim asnevv anddes'ire toseilieby Letters Ptttit 1is: v y

1. jrntt cotiibitttion items tumlerfttheti comprising an `iltei disk having a Icentral aperture with 1abutting lirietn'sf{tiitniiiiV it, fsm inneijdisk a'flapfted tto ibe inserted'ffroinfone side'f said In'ain outer'disk and'be'zraginst theabuttiiig means aroiindthejapetre, and having t fp'ttrt etetiditig mit gfthefpppsite side orflsaid inainotertdiskfthi's part'offthe inner disk havinga jpe'ii'i'hei'al` grbove lying behind the abutting means of thefa'petuie 'when inner'disk isgtli's inserted, v and'g-re- 'sili'ent fastening means lin ysaid groove, to 'prevent displacement of "saidlinne'r' diskfroin said outer disk, 1'but :accessible foi Ethe "pur-V pose of prying it out of saidfgrovetivhen it is desired to displac'e said inner tdisk lfrom said outer disk. A i '2. Inaconibin'ation'lokfat "blertw'heel comprising ter disk having central aperture Withan "akiall'y tapred :Wall-forming i abuttiri g 'means 'a'rou'iid it, fan' inner disk disk, lthis part 'f the Zinner disk haviii-g f' peripheral groove lying b'ehindthe abutting means*'of'tlie aperturefvvhentthe 'inner di'skis thus inserted," and 'resilient fastening Ainea'ns in Stutrgto'vepto prevent-displacement of said innerldisk from said "outerdisk, but

'comprisinganouterfdifsk havinghc'entral said outer diskand'fbe'aragainsttheabut# tirigimeansttrndfthe apeturetttinaving t fpttrtj extenditigtut fof j said rettet disk fen the opposite "side *f 'saidtniain outer ldisk,

sible for the purpose of prying it out of said groove when it is desired to displace said inner disk from said outer disk.

4. In a combination lock, a tumbler Wheel comprising an outer disk having a central aperture with a toothed Wall and abutting means around said toothed wall, an inner disk having a toothed periphery to mesh with said toothed wall and being adapted to be inserted from one side of said outer disk and bear against the abutting means around the aperture, and having a part extending out of the opposite side of said main outer disk, this part of the inner disk having a peripheral groove lying behind the toothed wall of the aperture when the inner disk is thus inserted, and resilient fastening means in said groove, to prevent displacement of said inner disk from said outer disk, but accessible for the purpose of prying it out of said groove when it is desired to displace said inner disk from said outer disk.

5. In a combination lock, a tumbler wheel comprising an outer disk having a central aperture with abutting means around it, an inner disk adapted to be inserted from one side of said outer disk and bear against the abutting means around the aperture, and having a part extending out of the opposite side of said outer disk, this part of the inner disk having a peripheral groove lying behind the abutting means of the aperture when the inner disk is thus inserted, and a wire bent into substantially the shape of an incomplete circle and sprung into said peripheral groove by spreading over the part of the periphery of said inner disk away from said outer disk, to prevent displacement of said inner disk from said outer disk, but accessible for the purpose of prying it out of said groove when it is desired to displace said inner disk from said outer disk.

6. In a combination lock, a tumbler wheel comprising an outer disk having a central aperture with a toothed wall, and abutting means around said toothed wall, an inner disk having a toothed periphery to mesh with said toothed wall and being adapted to be inserted from one side of said outer disk and bear against the abutting means around the aperture, and having a part extending out of the opposite side of said outer disk, this part of the inner disk having a peripheral groove lying behind the toothed wall of the aperture when the inner disk is thus inserted, and a wire bent into substantially the shape of an incomplete circle and sprung into said peripheral groove by spreading over the part of the periphery of said inner disk away from said outer disk, to prevent displacement of said inner disk from said outer disk, but accessible for the purpose of prying it out of said groove when it is desired to displace said inner disk from said outer disk.

7. In a combination lock, a tumbler wheel comprising an outer main part having a central aperture with abutting means around it, and an inner disk inserted into said aperture from one side of said mainpart against the abutting means and having a peripheral groove that lies behind the abutting means when said disk is thus inserted, and a resilient fastening means held in said groove and engaging behind the abutting means to prevent withdrawal of said inner disk from said outer main part, said inner disk having a stationary pressed-up lug formed integral therewith.

8. In a combination lock, a tumbler wheel comprising an outer main part having a central aperture with abutting means around it, and an inner disk inserted into said apern ture from one side of said main part against the abutting means and having a peripheral groove that lies behind the abutting means when said disk is thus inserted, and a resilient fastening means held in said groove and engaging behind the abutting means to prevent withdrawal of said inner disk from said outer main part, said inner disk having a stationary pressed-up lug formed integral therewith.

9. In a combination lock, a back plate formed of two sections of sheet metal, one of these sections having a hollow stud pressed forward from its center, and being embossed with an outer shell and a radially extending peripheral flange, and the outer section being in the form of a disk with its outer edge turned in over this peripheral flange of the one section, whereby the outer shell of the one section forms a bearing means for the back in the safe door, and whereby the peripheral flange with the outer edge turned thereover becomes a flange for fastening the back plate into the safe door.

JACOB BAUM.

Witnesses:

JAMES N. Ramsar, CLARENCE PERDEW.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patenti Washington, D. C. 

